Running up and down these stairs and down and up again

I'm running up and down these stairs
and down and up again.
As round the world spins as I round
this corner, round this bend.
Repetition; what's the point, is there a point
to this?
The things we build, the things we lose,
the things we never miss?
I'm trying to build, and lose myself
in pieces; less and more;
It's running up, and running down,
just like I've done before.
Keep doing what you did at first,
don't stop when it get's hard,
The world will be your treadmill,
spin you right down to the stars.